invisible but still ART ??

"This show puts its faith in the audience, in our willingness to think and our openness to ideas. But it cannot quite escape the trap of its own theme for not one of these works achieves total invisibility. Even in the black room there are discernible figures, pinpricks of light and visible forms. As long as our eyes are open, we continue to make pictures of the world."


http://www.guardian.co.uk/artanddesign/2012/jun/17/invisible-art-about-unseen-hayward-review